Mechanical horn.



0. C. ./RLITZ.

MECHANICAL HORN.

APPLICATION FILED Mmm, 1911.

1,1 10,082. l Patented sept.8,191t.

UNITED sfra'rns yPATENT OFFICE.

OSCAR C. ARLITZ, 0F NEW YORK,l N. Y., ASSIG-NOR TO LOVELL-MGCONNELLMANUFAC- TUBING COMPANY, A CORPORATION 0F DELAWARE..

MECHANICAL HORN'.

Specicatipn of Letters Patent.

Patented Sept. 8, 1914.

To all 'whom it may concern:

Be it known that I, OSCAR C. ARLITZ, a citizen of the United States,residing at the borough of'Manhattan, in the city, county, and State of.New York, have invented certain'new and useful Improvements inMechanical Horns, of which the following is a specification, referencebeing had therein to vthe accompanying drawings, whichform a partthereof. K

My invention relates to mechanical horns and more particularly lto avtype thereof employing amechanically flexed diaphragm.

vThe main object of the invention is to provide a horn of this characterwherein the diaphragm will be flexed by an impact member adapted toyrecede iwith the diaphragm upon the reflex action thereof be yond itsnormal plane, said impact member being adapted to, and capable o freceiving movement vin one direction by intermittent pulsations appliedin a manner not to interfene with the movement of said impact membei'-with, and under the control'of, the diaphragm upon the'refle'x actionthereof.

AA further object to provide a horn of this character wherein thediaphragm will be flexed to the maximum desirable degree with a minimumexpenditure of energy, thus lending economyto the actuation of Athe hornand at the same time reducing the cost of production as to the actuatingmechanism itself 1 A still further object is to provide a horn of thischaracter wherein the fleXure of the diaphragm will be accomplishedthrough an elastic impact member interposed between the rotary strikingmember and said diaphragm, thus relieving the diaphragm itself from thatwiping action incidental to thedirect contact of 'the striking member lwith the diaphragm and eliminating any possibility of injury resultingto the da-" phragm impact member, or of the diaphragm adjacent thereto,from sharp pacts between said diaphragm impact membei' and thecoperating diaphragm fiexing member. provide a horn of this characterwherein the striking'mem'ber willimpart substantially the maximumflexure to the diaphragm irrespective ofthe position ofthe diaphragmupon the reflex action thereof 'when thev And 'a still further object isto* striking member is operative relative to the diaphragm.

The invention consists primarily in a me` Referring to the drawingsz-Figure 1 is' a longitudinal section through a horn embodying myinvention; Fig. 2 is a vertical lateral section thereof: and Fig. 3 is ahorizontal view illustrating the mode of operation of the horn.

Like letters refer to like parts throughout the several views. I In theembodiment of my invention shown in the accompanying drawings, aindicates a horn casing toward the forward end of which is mounted inany desired manner a flexible metallic diaphragm b provided centrallythereof with a single impact stud or reinforcement c. The casing,forwardly of the diaphragm b is provided with a sound outlet opening atd, projecting from which is an ordinary horn or amplifier e.

This general construction andarrangement is old and well known in thisart, andno claim of invention is made thereto broadly. It has been foundin practice, however, that to prolong the life or preserve theelasticity of the diaphragm, it is essential `to provide la cleareld ofvibration therefor uponboth sides of the normal plane of the diaphragm,any limitation placed upon the reflex. action thereof tend! ing towardcrystallization resulting in a permanent displacement of the effectiveflexing area of the diaphragm about the stud c and in a losenv ofefficiency in-the horn.

lThe main actuating mechanism, I have shown as consistingy of a motor f,upon the shaftof which is mounted a striking lmem-v nism may besubstituted therefor Without departing from my invention in its 'broaderaspects, l

Mounted so as to have a fixed position relative 'lo ellestriliiigjailember g and the normal plane or' che diaphragm 0,. as uponthe fixed support i carried by die casing 0- or the motor casing", is eibretory member which projects upon e, pl 'ie parallel 11o the plane ofthe diaphrag Arre free ced of seid Vibratory impact mciizber curr/mg astud or reinforcement /c vcd to engage the stud or reieforceiiierlt c?'Hymn lplie diaphragm. rllhiss Vibrator); member fe l eierebly made ofspring metal, the elmalic J el which is elighly greater than ll' or thediaphragm, which elasticity will vom any mriance iii the@ of alleliliupliref il i ved. Upon the side oil ille nieiliber from thedlaplirasfm z Ad ic-Ymrd tbe emilia member g is 2r weer se lor impactmember Z adepted to be ew f ged by the seid Striking member, the vibrwlgl ber y thus being inter osed bem'ee'zjr tie Strilmw member and thedescribed Howe: lben it is lie circuit to lle desired ineens j @mi ding'elle eti, vf" .meirrbcf made operative, to roleze 'iber el; high le liemember i row-bed? will funpark no the impact .mem er upc elle v-'brzrory member j e aber@ pulses fcrcicg Seid Vibrelory iiieirdocrg md'with il; 'tbe diaphragm, oriiferdly nierriier flex or displace seiddiijob of "o from rior* rcel. The lower `ele@ E member g mid elle highrequeicy olf the immleee :from 4llie striking rieuiber g will quickly ildiaphragm b in molien with a, resultant c velopmeii of Sound 'Wavesprojected fahr tliescund opening LZ and amplifier e VVlrire the sind cand weer member upon. glie member y' are preferably used 'to protec tdiaphragm, the recprocetory movement el the said member j will reducethe weer upon the diaphragm to e minimum so *dure Such seeds e 'e notabsolutely essential. lliey do, however, permit the member j o bespliced away from tl e diaphragm, so that said i i bei' is "wiliout thegreufeei piene @if displace-- ment of elle diaphragm upon *che reliez;cion itliereoif. fleer elle pressure by the member j upon llocdiejol'rregm hesfleied le mese ement under e, rise fr upon tbe member 99Meher: action of seid ceci-ire izeeilber j no only elle die j bi1:

refine?. plane of icl@q carries elle plane. Should there l miem. in theexing o1 impulses from 'che sl same condition as io the ber will exis;as upon of the diaphragm. rlfbie c arrangement. permits elle mi l, fullforce oi' each impulee or imm 'striking member g to the im, withoutsubjecting izlio die@ impact, thus iiiiirl wing lili" crystellizationcil the (fliapb longing tbe life sind ell'iciercy libe causing thestriking member ge e imei-posed member adjaceii thereof.j l secure a.eulicient leveapplication of lie iiiipuleee pbrngm to permi. smell diestbe interposed member Le the tact with the striking iiemb to the eectivedispiacere@ phragul under seid inerpec'# 'll`l1is, together with lleredraw lbien between the striking; member end inerposed membciy reduces"che pow quired to oper?du elle lio-m l conomy off ope and che Y ductionowii c; lo the lower power moore is nel my inleiiiofv 'f *elle precisede he docomperlyei lerfgcly mettere or Ve. n vff'iliout d or 'cene of'che iriver l fing deeribed my iii claim sie new and desire 'eo bij.

lido/teilt? is l. in u mechanical born e fle; plu-mgm, e, flexiblevibrzitory impec, ber; 'one end ci which ie Herm l 0 ric mehr 'i aerienand seid vibrecory member im.

"cry por'eion of be die liber bevind e rises thereon adapted to engagesaid vibratory lmember intermediate its ends, whereby said vibratorymember is adapted to `automatically return to its normal position withinthe operative plane of said striking member and the end of said impactmember engaging and flexing the diaphragm, is adapted to pass saidnormal position under the control of said diaphragm irrespective of the:position of said striking member, and means actuating said strikingmember.

1. In a mechanical horn, a iexible diaphragm having a central wear studthereon, a vibratory impact member spaced away from said diaphragm, oneend of which member carries a stud adapted to engage the stud upon saiddiaphragm, a support for the other end of, said member independent ofthe vibratory portion of the diaphragm, a striking member adapted toengage said `fibra ory member intermediate its ends and torce it intoengagement with said diaphragm, and' means actuating said strik. ingmember.`

5. In a mechanical horn, Aa exible dia-, phragm, a vibratory impactmember, one end of whichjis adapted to engage and fiex said diaphragm, afixed support for the other end of said -vibratory member independent ofthe vibratory portion of the diaphragm, a striking member adapted -toengage said vibratory member adjacent' to its 'support and force it intoengagement with said .diaphragm whereby small displacement of saidvibratory member at `the point of engagement with said striking membersecures a large displacement thereof at the point of engagement with thediaphragm, and means actuating said striking member` 6. In a mechanicalhorn, ya flexible diaphragm, a flexible vibratory impact member havingless elasticity than said diaphragm, one end of which member isadaptedto engage and flex said diaphragm, a sup-- port fork the otherend of said vibratory member independent of the vibratory portion ofthe' diaphragm, a striking member adapted to engage said vibratorymember intermediate its ends, and means actuating said striking member.

v`7. In a. mechanical horn, a flexible diaphragm, a iexibllel vibratoryvimpact member extending parallel to the normal plane of said diaphragm,one end of which impact member is adapted to engage and fiex saiddiaphragm, a support for the other end of said vibratory memberindependentbof the vibratory portion of the diaphragm, and means adaptedto'engage said vibratory impact member intermediate its ends and forceit into engagement with said diaphragm 'with a series of impulseswhereby said impact member -is automatically restored to its normalplane and is permitted at its point of engagement with the diaphragm tohave movement upon said plane irrespective of the position of saidmeans.

8. In a mechanical horn, a flexible diaphragm, a flexible vibratoryimpact member parallel to the normal planeof said dia-4 phragm andnormally disengaged therefrom, one end .of which impact member isadapted to be forced into engagement with, and to flex, said diaphragm,a support for the 'other end of said vibratory member independent of thevibratory portion of the diaphragm, a striking member adapted to engagesaid vibratory member intermediate its endsvwhereby said member ispermitted to Hex with,and upon the reflex action of, said diaphragm, andmeans actuating said striking member.

In witness whereof, I have hereunto afxed my signature, in the presenceof two subscribing witnesses, this 25th day of February, 1911.

OSCAR C. ARLITZ.

